<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<script>
    //整数
    //   (+|-|)[1-9]\d*|0
    var reg=/((\+|\-|)[1-9]\d*|0)/
    //匹配邮箱
    var EmailReg=/.+@qq\.(.+)+/

    console.log(reg.exec("12j2j1k1322k33"));
</script>
</body>
</html>